(梅宮 竜之介, Umemiya Ryūnosuke)
"Bokutou no Ryu" Ryu in the beginning of Shaman King is a gang leader who is always on the lookout for the Best Place (The Happy Place in the English manga and The Sacred Hang in the English anime; His gang is known as the Dead Enders in the English anime).
In the manga, he is seen to first have a grudge against Yoh for slicing his hair off (this is a running gag throughout the first part of the series) and then discovers that Yoh has a fiancee, after trying to 'woo' Anna Kyoyama. He goes off to his gang's new 'Best Place' which is the run down Funbari Bowl, where he breaks down and believes the 'Headphones Kid', is ruining his life. He gets possessed by Tokagero who offers him a chance for revenge and kill Yoh. At the same time, Tokagero is wanting revenge on Amidamaru. The possessed Ryu breaks into the museum, and steals Harusame, at the same time kidnapping Manta.
He confronts Yoh and Amidamaru, and orders Amidamaru to integrate with his master so they can fight. He tricks Amidamaru into attacking Harusame and fights back with a technique called Tokage Kenpo (Lizard Style). Tokagero mocks Amidamaru saying that the same blade that was supposed to save him will take his life instead this time. After remembering how much Harusame was important, Amidamaru breaks Harusame and Tokagero is surprised. Yoh says that Tokagero had already lost, because of Amidamaru's long life commitment to his friend Mosuke. He tells him that he should rest in peace and move on. Tokagero refuses and says he'll die and Amidamaru with him. Ryu's gang then attack him, and say that they don't want Ryu to become a scumbag, and they'll always be friends with Ryu no matter what happens.
Soon after, Tokagero pulls out a knife and tries to kill Ryu, but the painful stress of two souls in one body makes him unable to control Ryu body, he discover that if he doesn't leave Ryu's body than Ryu will die, but Tokagero pretty comfortable with that. Having no other option, Yoh offers Tokagero to possess him, which he does. After saying it was foolish, Tokagero tries to kill Yoh, but realises that he can't do that and he is lectured again on how important trust is and being alone was painful for him, and after receiving trust from Yoh he doesn't need to take revenge, because he realised that revenge wasn't something he needed in the first place. This ends this struggle, and later Tokagero becomes Ryu's guardian ghost.
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